Oops I didn't mean to change this.

SetRowHidden() is more light-weight than ShowRows(). Let's stick with
SetRowHidden() here.

Change-Id: Ieb83078b5546107a3ee2ea3b8b73df9627525abe

sc/source/filter/excel/colrowst.cxx

@@ -346,7 +346,7 @@ void XclImpColRowSettings::ConvertHiddenFlags( SCTAB nScTab )
         {
             if (bPrevHidden)
             {
-                rDoc.ShowRows(nPrevRow, nRow-1, nScTab, false);
+                rDoc.SetRowHidden(nPrevRow, nRow-1, nScTab, true);
                 // #i38093# rows hidden by filter need extra flag
                 if (nFirstFilterScRow <= nPrevRow && nPrevRow <= nLastFilterScRow)
                 {